Researchers have discovered the earliest known ancestor of humans...
The microscopic sea animal, Saccorhytus, is the earliest known step on the evolutionary path that led to fish and - eventually - to humans.
The researchers were unable to find any evidence that the animal had an anus, which suggests that it consumed food and excreted from the same orifice.
The microscopic sea animal, Saccorhytus, is the earliest known step on the evolutionary path that led to fish and - eventually - to humans.
The researchers were unable to find any evidence that the animal had an anus, which suggests that it consumed food and excreted from the same orifice.